Go Back   EcoModder Forum > EcoModding > Aerodynamics
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-04-2010, 07:46 PM   #21 (permalink)
Aero Apprentice
 
swede's Avatar
 
Join Date: Aug 2009
Location: Winnipeg, Canada
Posts: 59
Thanks: 4
Thanked 6 Times in 4 Posts
Quote:
Originally Posted by ShadeTreeMech View Post
Do you hear less wind turbulance at speed?
Seems to be quieter than it was, yes.

__________________
1994 electricfly EV conversion 36V/450A/60km/h
1997 Suzuki Sprint hatch (parts car?)
1998 Geo Metro sedan 1.3L auto (the wifes)
2009 GMC Sierra 27us/mpg best yet (still workin on it)
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-06-2010, 06:45 PM   #22 (permalink)
Aero Apprentice
 
swede's Avatar
 
Join Date: Aug 2009
Location: Winnipeg, Canada
Posts: 59
Thanks: 4
Thanked 6 Times in 4 Posts
I just took a few more pictures to better show the side profile of the cap while mounted on the truck for those who are interested.

Here is a side profile



And detail of the rear

Attached Thumbnails
Click image for larger version

Name:	IMG00142-20100505-1642 [50%] [50%].jpg
Views:	583
Size:	24.4 KB
ID:	6033   Click image for larger version

Name:	IMG00144-20100505-1643 [50%] [50%].jpg
Views:	592
Size:	49.4 KB
ID:	6034  
__________________
1994 electricfly EV conversion 36V/450A/60km/h
1997 Suzuki Sprint hatch (parts car?)
1998 Geo Metro sedan 1.3L auto (the wifes)
2009 GMC Sierra 27us/mpg best yet (still workin on it)
  Reply With Quote
Old 05-06-2010, 06:53 PM   #23 (permalink)
Aero Apprentice
 
swede's Avatar
 
Join Date: Aug 2009
Location: Winnipeg, Canada
Posts: 59
Thanks: 4
Thanked 6 Times in 4 Posts
Question:

What do you do when you have some leftover coroplast, some spare time, and a gaping air hole in the front of you're truck?

You make a grille block of course

Here's the grille



A few minutes of cutting later.....




And the finished product...





I'm pretty sure that the lower opening will be more than sufficient to provide airflow unless I tow something. If needs be I cut a few zipties and I have full airflow back immediately.
Attached Thumbnails
Click image for larger version

Name:	IMG00145-20100506-1705 [50%] [50%].jpg
Views:	632
Size:	46.6 KB
ID:	6035   Click image for larger version

Name:	IMG00146-20100506-1706 [50%] [50%].jpg
Views:	618
Size:	39.9 KB
ID:	6036   Click image for larger version

Name:	IMG00148-20100506-1715 [50%] [50%].jpg
Views:	626
Size:	38.1 KB
ID:	6037   Click image for larger version

Name:	IMG00149-20100506-1716 [50%] [50%].jpg
Views:	721
Size:	39.2 KB
ID:	6038  
__________________
1994 electricfly EV conversion 36V/450A/60km/h
1997 Suzuki Sprint hatch (parts car?)
1998 Geo Metro sedan 1.3L auto (the wifes)
2009 GMC Sierra 27us/mpg best yet (still workin on it)
  Reply With Quote
The Following User Says Thank You to swede For This Useful Post:
KamperBob (05-20-2010)
Old 05-08-2010, 12:47 PM   #24 (permalink)
Basjoos Wannabe
 
ShadeTreeMech's Avatar
 
Join Date: Apr 2009
Location: Arkansas
Posts: 870

The Van - '97 Mercury Villager gs
90 day: 19.8 mpg (US)

Lyle the Kindly Viking - '99 Volvo V70
90 day: 25.82 mpg (US)
Thanks: 174
Thanked 49 Times in 32 Posts
if you'd have used black zip ties it would have been perfect

and if you hear less wind turbulance, then there is less wind turbulance, and that's bound to be a good thing.
__________________
RIP Maxima 1997-2012


Quote:
Originally Posted by jamesqf View Post
I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
  Reply With Quote
Old 05-10-2010, 12:05 AM   #25 (permalink)
Aero Apprentice
 
swede's Avatar
 
Join Date: Aug 2009
Location: Winnipeg, Canada
Posts: 59
Thanks: 4
Thanked 6 Times in 4 Posts
Results.....

Well, I had the first decent weather to test the effectiveness of the AeroLid and grill block. No major head or cross-winds and no tailwind to give false high numbers.

Speed was kept around 100-105km/h and highest average about midway through the trip peaked @ 23.1mpg US. Overall average was 22.4 mpg US.

Thats an average increase of 12% over my usual FE numbers.

On a side note, the 24mpg in my sig was calculated in IMP mpg.
__________________
1994 electricfly EV conversion 36V/450A/60km/h
1997 Suzuki Sprint hatch (parts car?)
1998 Geo Metro sedan 1.3L auto (the wifes)
2009 GMC Sierra 27us/mpg best yet (still workin on it)
  Reply With Quote
The Following 2 Users Say Thank You to swede For This Useful Post:
bondo (05-21-2010), ChazInMT (05-16-2010)
Old 05-13-2010, 05:27 PM   #26 (permalink)
Getting BETTER Mileage
 
Jethro's Avatar
 
Join Date: Dec 2009
Location: Los Alamos, NM
Posts: 108

Lucky No 19 - '11 Ram 1500 Express ST

Venti - '13 Ram 2500 Tradesman
Thanks: 6
Thanked 18 Times in 8 Posts
Gotta love trucks, getting a 12% increase isn't hard.
__________________
- Greg
  Reply With Quote
Old 05-16-2010, 10:40 AM   #27 (permalink)
Aero Deshi
 
ChazInMT's Avatar
 
Join Date: Jan 2010
Location: Vero Beach, FL
Posts: 1,065

MagMetalCivic - '04 Honda Civic Sedan EX
Last 3: 34.25 mpg (US)
Thanks: 430
Thanked 668 Times in 357 Posts
Hey Swede, Sorry I been out of it for a while. Your cap looks great, good job on it. I had about the same result (12% gain give er take) with my 2000 GMC. I'd vote for side hinge too, you would have to remake something on your current lid if you try to front hinge it.

Again Good Job....Welcome to the club.
  Reply With Quote
Old 05-17-2010, 12:08 AM   #28 (permalink)
EcoModding Lurker
 
Join Date: Nov 2009
Location: poughquag new york USA
Posts: 69

old red taco - '02 toyota tacoma regular cab
90 day: 29.49 mpg (US)
Thanks: 1
Thanked 27 Times in 15 Posts
you should do a ABA test. there are allot of variables from day to day. the only true test is a ABA test. i thought i was getting around the same increase until i did a ABA test.
  Reply With Quote
Old 05-18-2010, 06:10 PM   #29 (permalink)
Aero Apprentice
 
swede's Avatar
 
Join Date: Aug 2009
Location: Winnipeg, Canada
Posts: 59
Thanks: 4
Thanked 6 Times in 4 Posts
My truck has an onboard fuel efficiency computer and it shows total gallons of fuel used/avg FE/ ODO/ etc. Based on that I am getting a lifetime city/hwy average of just over 16mpg. I am hoping to see this number start to move up as better weather and new mods impact my overall FE.

I want to do some ABAB tests one of these days but that will have to be on a hwy trip on the same day for true accuracy, correct????
__________________
1994 electricfly EV conversion 36V/450A/60km/h
1997 Suzuki Sprint hatch (parts car?)
1998 Geo Metro sedan 1.3L auto (the wifes)
2009 GMC Sierra 27us/mpg best yet (still workin on it)
  Reply With Quote
Old 05-19-2010, 11:42 AM   #30 (permalink)
Aero Wannabe
 
COcyclist's Avatar
 
Join Date: Dec 2007
Location: NW Colo
Posts: 696

TDi - '04 VW Golf
TEAM VW AUDI Group
90 day: 47.98 mpg (US)
Thanks: 625
Thanked 196 Times in 154 Posts
If you have instantaneous fuel economy readings on your onboard computer, it is possible to do it on a flat stretch of road. Warm up the truck, drive between 2 landmarks using cruise control at a constant speed. Leave the truck running and cruise "on" between runs. Disengage cruise by tapping the brake. It is best to do both directions in light traffic and no wind if possible. Remove Kamm, repeat. Replace Kamm, repeat. It takes some time to get accurate results and higher speeds will show bigger differences in Aero mods.

__________________
60 mpg hwy highest, 50+mpg lifetime
TDi=fast frugal fun
https://ecomodder.com/forum/showthre...tml#post621801


Quote:
Originally Posted by freebeard View Post
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
  Reply With Quote
The Following User Says Thank You to COcyclist For This Useful Post:
MetroMPG (05-20-2010)
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ben Nelson's Electro-Metro Build thread bennelson Fossil Fuel Free 1499 12-22-2019 07:24 PM
Build Thread: 1996 Ranger 2.3L 5spd 2WD XVTer EcoModding Central 18 05-27-2012 08:39 PM
The Little Red Build Thread Oval_Overload EcoModding Central 37 09-30-2010 06:19 PM
Build Thread Key Postings Index Experiment. TestDrive Forum News & Feedback 7 02-15-2009 08:53 PM
The UnNamed Wagon's build thread - Let it begin! Work in Progress XFi EcoModding Central 38 08-01-2008 12:21 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com